Zip code 21010: Gunpowder, Maryland

Q: What city is zip code 21010?

21010 is assigned to Gunpowder, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 21010 in?

21010 is in Harford County, Maryland.

Q: What is the population of 21010?

About 239 people live in 21010, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 21010?

The median household income in 21010 is $99,410.

Q: What zip codes are near 21010?

The closest zip codes to 21010 are 21040, 21027, 21085, 21009, 21162.

Residential delivery areaHarford CountyEastern Time

Population

239

Small sample: rough estimates

Median household income

$99K

U.S. $81K

Median home value

—

U.S. $333K

Median rent

$3,147/mo

U.S. $1,413

Median age

19.3

U.S. 38.9

Land area

7.3 sq mi

33 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 21010

21010 is a rural zip code in Gunpowder, Maryland (Harford County), covering 7.3 sq mi of land. About 239 people live here, or 33 per square mile. The median resident is 19.3 years old, compared with 38.9 nationally. With so few residents, the Census figures below are rough estimates with wide margins of error.

The median household earns $99,410 a year, 23% above the national median of $80,734. 0% of residents live below the poverty line (U.S.: 12.5%). 0% of occupied homes are lived in by their owners, and renters pay a median of $3,147 a month.

69% of adults hold a bachelor's degree or higher (U.S.: 36%). The most common jobs among working residents are in office and administrative support; production and manufacturing; and management. 66% of households speak a language other than English at home, most often Spanish.

How 21010 compares

Sorted from highest to lowest national percentile

Only about 239 people live here, so these survey estimates have wide margins of error.

Median gross rent$3,147
99th
U.S. $1,413 · MD $1,7059th of 338 in MD
Broadband access100%
99th
StrengthU.S. 91% · MD 92.4%21st of 441 in MD
Veterans35.9%
99th
U.S. 6.2% · MD 6.8%3rd of 446 in MD
Housing vacancy53%
99th
U.S. 10.1% · MD 7.7%5th of 441 in MD
Residents under 1845.6%
99th
U.S. 22% · MD 22.2%1st of 446 in MD
Government workers65.5%
99th
U.S. 14.5% · MD 22.5%3rd of 444 in MD
Rent-burdened renters70.9%
98th
WeaknessU.S. 51.1% · MD 51.5%54th of 404 in MD
Median earnings per worker$98,507
97th
StrengthU.S. $49,666 · MD $61,20037th of 443 in MD
Bachelor's degree or higher69.3%
95th
StrengthU.S. 35.7% · MD 43.4%37th of 445 in MD
Median household income$99,410
71st
U.S. $80,734 · MD $103,678229th of 414 in MD
Work from home16.2%
66th
U.S. 15.1% · MD 19.3%226th of 444 in MD
Foreign-born residents8.8%
46th
U.S. 14.1% · MD 16.6%175th of 446 in MD
Diversity index32.6
27th
U.S. 61.4 · MD 67.7283rd of 446 in MD
Per capita income$28,745
15th
WeaknessU.S. $44,673 · MD $52,979424th of 446 in MD
Population density33/sq mi
5th
U.S. 95/sq mi · MD 639/sq mi427th of 446 in MD
Population239
1st
U.S. 334,922,499 · MD 6,206,011425th of 446 in MD
Median age19.3
1st
U.S. 38.9 · MD 39.4445th of 446 in MD
Poverty rate0%
1st
StrengthU.S. 12.5% · MD 9.4%432nd of 441 in MD
Homeownership rate0%
1st
WeaknessU.S. 65.2% · MD 67.6%437th of 441 in MD
Unemployment rate0%
1st
StrengthU.S. 5.2% · MD 4.9%417th of 444 in MD
Uninsured rate0%
1st
StrengthU.S. 8.4% · MD 6.3%417th of 444 in MD
Residents 65 and older0%
1st
U.S. 17.2% · MD 16.7%441st of 446 in MD
Tech workers0%
1st
U.S. 3.8% · MD 6.4%412th of 444 in MD
Healthcare workers0%
1st
U.S. 9.7% · MD 9%428th of 444 in MD
Self-employed workers0%
1st
U.S. 10% · MD 8.7%432nd of 444 in MD
Income inequality (Gini)0.167
1st
StrengthU.S. 0.483 · MD 0.456435th of 438 in MD

Measure	21010	Harford	MD	U.S.	National percentile	Rank in MD
Median gross rent	$3,147	$1,586	$1,705	$1,413	99th	9th of 338
Broadband accessStrength	100%	92.6%	92.4%	91%	99th	21st of 441
Veterans	35.9%	8.6%	6.8%	6.2%	99th	3rd of 446
Housing vacancy	53%	3.5%	7.7%	10.1%	99th	5th of 441
Residents under 18	45.6%	22.3%	22.2%	22%	99th	1st of 446
Government workers	65.5%	22.5%	22.5%	14.5%	99th	3rd of 444
Rent-burdened rentersWeakness	70.9%	48.9%	51.5%	51.1%	98th	54th of 404
Median earnings per workerStrength	$98,507	$65,599	$61,200	$49,666	97th	37th of 443
Bachelor's degree or higherStrength	69.3%	40.3%	43.4%	35.7%	95th	37th of 445
Median household income	$99,410	$112,265	$103,678	$80,734	71st	229th of 414
Work from home	16.2%	14.9%	19.3%	15.1%	66th	226th of 444
Foreign-born residents	8.8%	5.9%	16.6%	14.1%	46th	175th of 446
Diversity index	32.6	46.1	67.7	61.4	27th	283rd of 446
Per capita incomeWeakness	$28,745	$51,717	$52,979	$44,673	15th	424th of 446
Population density	33/sq mi	603/sq mi	639/sq mi	95/sq mi	5th	427th of 446
Population	239	263,757	6,206,011	334,922,499	1st	425th of 446
Median age	19.3	40.5	39.4	38.9	1st	445th of 446
Poverty rateStrength	0%	7.1%	9.4%	12.5%	1st	432nd of 441
Homeownership rateWeakness	0%	79.7%	67.6%	65.2%	1st	437th of 441
Unemployment rateStrength	0%	3.8%	4.9%	5.2%	1st	417th of 444
Uninsured rateStrength	0%	3.6%	6.3%	8.4%	1st	417th of 444
Residents 65 and older	0%	17.4%	16.7%	17.2%	1st	441st of 446
Tech workers	0%	5.7%	6.4%	3.8%	1st	412th of 444
Healthcare workers	0%	9.3%	9%	9.7%	1st	428th of 444
Self-employed workers	0%	7.2%	8.7%	10%	1st	432nd of 444
Income inequality (Gini)Strength	0.167	0.408	0.456	0.483	1st	435th of 438

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

46%

5–17

18%

18–24

25–34

15%

35–44

13%

45–54

55–64

65–74

75+

Median age

19.3

Under 18

45.6%

65 and over

Race and ethnicity

White79%
Black0%
Hispanic21%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial0%

Diversity index

32.6

U.S. 61.4

Foreign-born

8.8%

U.S. 14.1%

Born in state

1.3%

Language spoken at home (households)

English only

35%

Spanish

65%

Other Indo-European

Asian / Pacific

Other

Households

Households: 55
Average household size: 4.4
Family households: 76.4%
Married couples: 76.4%
Living alone: 23.6%
Veterans (of adults): 35.9%
Male / female: 63% / 37%

Income and poverty

Household income distribution

<$25k

$25–50k

$50–75k

$75–100k

65%

$100–150k

24%

$150–200k

$200k+

11%

Median household income

21010

$99,410

Harford Co.

$112,265

Maryland

$103,678

United States

$80,734

Per capita income

$28,745

U.S. $44,673

Poverty rate

U.S. 12.5%

Households earning $150K+

10.9%

U.S. 23%

Income inequality (Gini)

0.167

U.S. 0.483

Housing

Median home value

21010

—

Harford Co.

$386,400

Maryland

$419,900

United States

$332,700

Median gross rent

21010

$3,147

Harford Co.

$1,586

Maryland

$1,705

United States

$1,413

Types of housing

Single-family

58%

2–4 units

18%

5–19 units

20+ units

15%

Mobile home

Boat, RV, van

Housing units: 117
Owner-occupied: 0%
Vacant: 53%
Median year built: 1939 or earlier
Median rooms: 7.7
Renters paying 30%+ of income: 70.9%
Renters paying 50%+ of income: 0%
Home value to income: —

Work and commute

How people get to work

Drove alone

84%

Carpooled

Transit

Walked

Bicycle

Worked from home

16%

Other

Commute time (one way)

<10 min

10–19

75%

20–29

11%

30–44

14%

45–59

60+

Average commute

—

U.S. 26.4 min

Unemployment

U.S. 5.2%

In labor force

39.8%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Office and admin

65%

Production

13%

Management

11%

Business and finance

11%

Computer and math

Engineering and science

Education

Legal and social services

Arts, media and sports

Healthcare

Police and fire

Food service

Cleaning and personal care

Sales

Construction and repair

Farming, fishing and forestry

Transportation and moving

Industries

Public administration

65%

Manufacturing

13%

Professional and technical services

11%

Admin, support and management

11%

Health care and social assistance

Education

Retail

Construction

Restaurants and hotels

Finance, insurance and real estate

Transportation, warehousing and utilities

Other services

Wholesale

Information

Arts and recreation

Agriculture and mining

Median earnings per worker

$98,507

U.S. $49,666

Self-employed

U.S. 10%

Government workers

65.5%

U.S. 14.5%

Nonprofit workers

U.S. 8.8%

Median earnings by type of work

Type of work	21010	U.S.
Management, business, science and arts	—	$74,888
Service	—	$26,804
Sales and office	—	$40,476
Construction and maintenance	—	$49,199
Production and transportation	—	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

Some college

Associate's

24%

Bachelor's

Graduate

63%

High school graduate or higher: 100%
Bachelor's degree or higher: 69.3%
Graduate or professional degree: 62.5%
Households with broadband: 100%
Cable, fiber or DSL: 100%
No internet access: 0%
Without health insurance: 0%
Limited-English households: 0%

Geography

City (USPS): Gunpowder
State: Maryland
County: Harford County
Center point: 39.3909° N, 76.2926° W
Land area: 7.3 sq mi
Water area: 0.1 sq mi
Time zone: Eastern Time (UTC-5, UTC-4 in summer)
Zip type: Residential delivery area

Cities and towns within this zip

Edgewood (unincorporated)78% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 21010

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
21040	Edgewood, MD	2.7 mi	24,960	$81,704	$238,000
21027	Chase, MD · PO box	4.6 mi	—	—	—
21085	Joppa, MD	5.1 mi	17,307	$113,714	$348,600
21009	Abingdon, MD	5.6 mi	33,679	$121,660	$357,100
21162	White Marsh, MD	6 mi	4,639	$157,813	$451,600
21220	Middle River, MD	6.2 mi	42,824	$81,817	$300,100
21156	Upper Falls, MD	6.5 mi	204	—	$793,800
21017	Belcamp, MD	6.6 mi	6,648	$106,831	$258,300
21087	Kingsville, MD	7.6 mi	5,537	$129,188	$534,300
21130	Perryman, MD	8 mi	112	$17,336	—
21128	Perry Hall, MD	8.4 mi	15,501	$128,069	$449,500
21001	Aberdeen, MD	9.2 mi	27,168	$83,238	$285,800

Questions about 21010

What city is zip code 21010?

21010 is assigned to Gunpowder, Maryland. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 21010 in?

21010 is in Harford County, Maryland.

What is the population of 21010?

About 239 people live in 21010, according to the Census Bureau's American Community Survey.

What time zone is 21010 in?

21010 is in Eastern Time.

What is the median household income in 21010?

The median household income in 21010 is $99,410.

What zip codes are near 21010?

The closest zip codes to 21010 are 21040, 21027, 21085, 21009, 21162.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 21010, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.